Data SheetData Sheet
Date: September 2006/January 2010
EPCOS AG 2006, 2010. Reproduction, publication and dissemination of this data sheet
and the information contained therein without EPCOS’ prior express consent is prohibited.
Ferrites and accessories
RM 14, RM 14 LP
Cores and accessories
Series/Type: B65887, B65888
209/06
Please read Cautions and warnings and
Important notes at the end of this document.
To IEC 62317-4
Optimized core cross section and increased
thickness of base for power applications
Without center hole
Delivery mode: sets
Magnetic characteristics (per set)
Σ l/A= 0.35 mm
–1
le= 70 mm
Ae= 200 mm2
Amin = 170 mm2
Ve= 14000 mm3
Approx. weight 74 g/set
Gapped
Ungapped
Material AL value
nH
s
approx.
mm
µeOrdering code
-E without center hole
N41 160 ±3% 1.90 45 B65887E0160A041
250 ±3% 1.00 70 B65887E0250A041
400 ±3% 0.50 111 B65887E0400A041
1000 ±5% 0.15 279 B65887E1000J041
Material AL value
nH
µePV
W/set
Ordering code
-E without center
hole
N49 3900 +30/–20% 1090 < 2.37 ( 50 mT, 500 kHz, 100 °C) B65887E0000R049
N87 6000 +30/–20% 1670 < 7.40 (200 mT, 100 kHz, 100 °C) B65887E0000R087
N97 6000 +30/–20% 1670 < 5.60 (200 mT, 100 kHz, 100 °C) B65887E0000R097
N41 6800 +30/–20% 1890 < 2.52 (200 mT, 25 kHz, 100 °C) B65887E0000R041
B65887Core
RM 14
309/06
Please read Cautions and warnings and
Important notes at the end of this document.
Coil former
Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
H max. operating temperature 180 °C), color code black
Sumikon PM 9630 ® [E41429 (M)], SUMITOMO BAKELITE CO LTD
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3.5 s
Winding: see Data Book 2007, chapter “Processing notes, 2.1”
Squared pins.
For matching clamp and insulating washer see page 5.
10 pins 12 pins
Sections AN
mm2
lN
mm
AR value
µΩ
Pins Ordering code
1107 71.5 23 10 B65888N1010D001
12 B65888N1012D001
FRM0273-D
3
15,2+0,3
6,3±0,3
0,8±0,05
1±0,05
0,6
2,54 ø1,3+0,1
Erdungspunkte ø1,6+0,1
1
2
3
12
11
10
9
74
67
9
64
10
11 12
1
2
3
8
5
0,3ø28,8
_
_
ø16,8 0,2
0,320,5
_
0,11,5
_
Ground Ø 1.6+0.1 Hole arrangement
View in mounting direction
B65888Accessories
RM 14
409/06
Please read Cautions and warnings and
Important notes at the end of this document.
Coil former for power applications
Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
Valox 420-SE0 ® [E45329 (M)], GE PLASTICS B V
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3.5 s
Winding: see Data Book 2007, chapter “Processing notes, 2.1”
For matching clamp and insulating washer see page 5.
Sections AN
mm2
lN
mm
AR value
µΩ
Pins Ordering code
1106 71.5 23 12 B65888C1512T001
Hole arrangement
View in mounting direction
(Note half pitch!)
Marking of pin 1
Ground Ø 1.6+0.1
B65888Accessories
RM 14
5 01/10
Please read Cautions and warnings and
Important notes at the end of this document.
Clamp
With ground terminal, made of stainless spring steel (tinned), 0.5 mm thick
Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Insulating washer for double-clad PCBs
Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120 °C), 0.25 mm thick
Makrofol FR, [E118859 (M)], natural color, BAYER MATERIALSCIENCE L L C
Clamp
Ordering code
Clamp (ordering code per piece, 2 are required) B65888A2002X000
Insulating washer (bulk) B65888B2005X000
FRM0142-C
27,9+0,3
1 0,2
_
1 0,2
_
25,8+0,3
5,5 0,2
_
0,9x0,5
8±0,1
FRM0315-S
_
30 0.3
36.8 0.2
_
0.236.8
_
Insulating washer
B65888Accessories
RM 14
609/06
Please read Cautions and warnings and
Important notes at the end of this document.
To IEC 62317-4
For compact transformers
Without center hole
Delivery mode: sets
Magnetic characteristics (per set)
Σ l/A= 0.25 mm
–1
le= 50.9 mm
Ae= 201 mm2
Amin = 170 mm2
Ve= 10230 mm3
Approx. weight 55 g/set
Ungapped
Material AL value
nH
µePV
W/set
Ordering code
N49 5100 +30/–20% 1030 < 2.0 ( 50 mT, 500 kHz, 100 °C) B65887P0000R049
N92 5400 +30/–20% 1090 < 6.1 (200 mT, 100 kHz, 100 °C) B65887P0000R092
N87 7100 +30/–20% 1430 < 5.5 (200 mT, 100 kHz, 100 °C) B65887P0000R087
B65887PCore
RM 14 »Low Profile«
709/06
Ferrites and accessories
Cautions and warnings
Mechanical stress and mounting
Ferrite cores have to meet mechanical requirements during assembling and for a growing number
of applications. Since ferrites are ceramic materials one has to be aware of the special behavior
under mechanical load.
As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing
or tensile load. Especially high cooling rates under ultrasonic cleaning and high static or cyclic loads
can cause cracks or failure of the ferrite cores.
For detailed information see Data Book 2007, chapter “General – Definitions, 8.1”.
Effects of core combination on AL value
Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent
that the initial permeability is dependent on the stress state of the core. The higher the stresses are
in the core, the lower is the value for the initial permeability. Thus the embedding medium should
have the greatest possible elasticity.
For detailed information see Data Book 2007, chapter “General – Definitions, 8.2”.
Heating up
Ferrites can run hot during operation at higher flux densities and higher frequencies.
NiZn-materials
The magnetic properties of NiZn-materials can change irreversible in high magnetic fields.
Processing notes
The start of the winding process should be soft. Else the flanges may be destroid.
To strong winding forces may blast the flanges or squeeze the tube that the cores can no more
be mount.
To long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrangement.
Not following the processing notes for soldering of the J-leg terminals may cause solderability
problems at the transformer because of pollution with Sn oxyd of the tin bath or burned insulation
of the wire. For detailed information see Data Book 2007, chapter “Processing notes, 2.2”.
The dimensions of the hole arrangement have fixed values and should be understood as a
recommendation for drilling the printed circuit board. For dimensioning the pins, the group of
holes can only be seen under certain conditions, as they fit into the given hole arrangement. To
avoid problems when mounting the transformer, the manufacturing tolerances for positioning the
customers’ drilling process must be considered by increasing the hole diameter.
8 01/10
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As
a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them
than the customers themselves. For these reasons, it is always ultimately incumbent on the
customer to check and decide whether an EPCOS product with the properties described in the
product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in which
the malfunction or failure of an electronic component could endanger human life or health (e.g.
in accident prevention or life-saving systems), it must therefore be ensured by means of suitable
design of the customer application or other action taken by the customer (e.g. installation of
protective circuitry or redundancy) that no injury or damage is sustained by third parties in the
event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our
Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products.
Consequently, we cannot guarantee that all products named in this publication will always be
available. The aforementioned does not apply in the case of individual agreements deviating
from the foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current version
of the “General Terms of Delivery for Products and Services in the Electrical Industry”
published by the German Electrical and Electronics Industry Association (ZVEI).
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap,
DigiSiMic, DSSP, MiniBlue, MiniCell, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube,
PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID,
SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trademarks registered or
pending in Europe and in other countries. Further information will be found on the Internet at
www.epcos.com/trademarks.